Finding the Fourth Proportional to 3,777.31, 5,665.38 and 1,929.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,777.31 : 5,665.38 = 1,929.79 : x
2. Step 2: Convert to fraction form
   3,777.31/5,665.38 = 1,929.79/x
3. Step 3: Cross multiply
   3,777.31x = 5,665.38 × 1,929.79
4. Step 4: Simplify right side
   3,777.31x = 10,932,993.67
5. Step 5: Solve for x
   x = 10,932,993.67/3,777.31
6. Step 6: Final answer
   x = 2,894.39